// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
description: >
    Invocation of the instance's `then` method
es6id: 25.4.4.3
info: |
    11. Let result be PerformPromiseRace(iteratorRecord, C, promiseCapability).

    [...]

    25.4.4.3.1 Runtime Semantics: PerformPromiseRace

    1. Repeat
        [...]
        j. Let result be Invoke(nextPromise, "then",
           «promiseCapability.[[Resolve]], promiseCapability.[[Reject]]»).
        k. ReturnIfAbrupt(result).
---*/

function Test() {
    var p1 = new Promise(function() {});
    var p2 = new Promise(function() {});
    var p3 = new Promise(function() {});
    var callCount = 0;
    var currentThis = p1;
    var nextThis = p2;
    var afterNextThis = p3;

    p1.then = p2.then = p3.then = function(a, b) {
      assert.sameValue(typeof a, 'function', 'type of first argument');
      assert.sameValue(
        a.length,
        1,
        'ES6 25.4.1.3.2: The length property of a promise resolve function is 1.'
      );
      assert.sameValue(typeof b, 'function', 'type of second argument');
      assert.sameValue(
        b.length,
        1,
        'ES6 25.4.1.3.1: The length property of a promise reject function is 1.'
      );
      assert.sameValue(arguments.length, 2, '`then` invoked with two arguments');
      assert.sameValue(this, currentThis, '`this` value');

      currentThis = nextThis;
      nextThis = afterNextThis;
      afterNextThis = null;

      callCount += 1;
    };

    Promise.race([p1, p2, p3]);

    assert.sameValue(callCount, 3, '`then` invoked once for every iterated value');
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
